Temperature sender: one or two?

[47COE]

I'm working on a 1941 COE truck with 59-AB engine. It has just one temperature sender, apparently standard practice in 1941.

My 47 COE has two senders.

Should I get a two prong sender and wire it like the later engines? Or is one good enough?

I don't plan to enter it for point judging. I just want a reliable truck.


Tom